<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8"/>
        <title></title>
        <style type="text/css">
            #p1 {color: gray;}
            #p2 {color: orange;}
            #p3 {color: red;}
        </style>
    </head>
    <body>
        <p id="p1">字体颜色为灰色</p>
        <p id="p2">字体颜色为橘色</p>
        <p id="p3">字体颜色为红色</p>
    </body>
</html>